On Fri, Mar 23, 2018 at 12:49:50PM +0530, Sharat Masetty wrote:
> Allow different Adreno targets the ability to pass
> specific mmu features to the generic layers. This will
> help conditionally configure certain iommu features for
> certain Adreno targets.
>
> Also Add a few simple support functions to support a bitmask of
> features that a specific MMU implementation supports.
Reviewed-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
> Signed-off-by: Sharat Masetty <smasetty@xxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 2 +-
> drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 2 +-
> drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 2 +-
> drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 2 +-
> drivers/gpu/drm/msm/adreno/adreno_gpu.c | 4 +++-
> drivers/gpu/drm/msm/adreno/adreno_gpu.h | 2 +-
> drivers/gpu/drm/msm/msm_gpu.c | 6 ++++--
> drivers/gpu/drm/msm/msm_gpu.h | 1 +
> drivers/gpu/drm/msm/msm_mmu.h | 13 +++++++++++++
> 9 files changed, 26 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
> index 1dd84d3..a7a8573 100644
> --- a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c
> @@ -492,7 +492,7 @@ struct msm_gpu *a3xx_gpu_init(struct drm_device *dev)
> adreno_gpu->registers = a3xx_registers;
> adreno_gpu->reg_offsets = a3xx_register_offsets;
>
> - ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 1);
> + ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 1, 0);
> if (ret)
> goto fail;
>
> diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
> index 2884b1b..5e7e15d6 100644
> --- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c
> @@ -574,7 +574,7 @@ struct msm_gpu *a4xx_gpu_init(struct drm_device *dev)
> adreno_gpu->registers = a4xx_registers;
> adreno_gpu->reg_offsets = a4xx_register_offsets;
>
> - ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 1);
> + ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 1, 0);
> if (ret)
> goto fail;
>
> diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> index a4f68af..c9e06ff 100644
> --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> @@ -1295,7 +1295,7 @@ struct msm_gpu *a5xx_gpu_init(struct drm_device *dev)
>
> check_speed_bin(&pdev->dev);
>
> - ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 4);
> + ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 4, 0);
> if (ret) {
> a5xx_destroy(&(a5xx_gpu->base.base));
> return ERR_PTR(ret);
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> index e83b066..bd50674 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> @@ -1040,7 +1040,7 @@ struct msm_gpu *a6xx_gpu_init(struct drm_device *dev)
> adreno_gpu->registers = a6xx_registers;
> adreno_gpu->reg_offsets = a6xx_register_offsets;
>
> - ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 4);
> + ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 4, 0);
> if (ret) {
> a6xx_destroy(&(a6xx_gpu->base.base));
> return ERR_PTR(ret);
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> index 6657461..a87ec6b 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
> @@ -557,7 +557,8 @@ static int adreno_get_pwrlevels(struct device *dev,
>
> int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
> struct adreno_gpu *adreno_gpu,
> - const struct adreno_gpu_funcs *funcs, int nr_rings)
> + const struct adreno_gpu_funcs *funcs, int nr_rings,
> + unsigned long mmu_features)
> {
> struct adreno_platform_config *config = pdev->dev.platform_data;
> struct msm_gpu_config adreno_gpu_config = { 0 };
> @@ -576,6 +577,7 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
> adreno_gpu_config.va_end = 0xffffffff;
>
> adreno_gpu_config.nr_rings = nr_rings;
> + adreno_gpu_config.mmu_features = mmu_features;
>
> adreno_get_pwrlevels(&pdev->dev, gpu);
>
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> index bb9affd..19eda65 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
> @@ -225,7 +225,7 @@ void adreno_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
>
> int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
> struct adreno_gpu *gpu, const struct adreno_gpu_funcs *funcs,
> - int nr_rings);
> + int nr_rings, unsigned long mmu_features);
> void adreno_gpu_cleanup(struct adreno_gpu *gpu);
> int adreno_load_fw(struct adreno_gpu *adreno_gpu);
>
> diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
> index ce8e781..c7f616c 100644
> --- a/drivers/gpu/drm/msm/msm_gpu.c
> +++ b/drivers/gpu/drm/msm/msm_gpu.c
> @@ -704,7 +704,7 @@ static int get_clocks(struct platform_device *pdev, struct msm_gpu *gpu)
>
> static struct msm_gem_address_space *
> msm_gpu_create_address_space(struct msm_gpu *gpu, struct platform_device *pdev,
> - uint64_t va_start, uint64_t va_end)
> + uint64_t va_start, uint64_t va_end, unsigned long mmu_features)
> {
> struct iommu_domain *iommu;
> struct msm_gem_address_space *aspace;
> @@ -732,6 +732,8 @@ static int get_clocks(struct platform_device *pdev, struct msm_gpu *gpu)
> return ERR_CAST(aspace);
> }
>
> + msm_mmu_set_feature(aspace->mmu, mmu_features);
> +
> ret = aspace->mmu->funcs->attach(aspace->mmu, NULL, 0);
> if (ret) {
> msm_gem_address_space_put(aspace);
> @@ -815,7 +817,7 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
> msm_devfreq_init(gpu);
>
> gpu->aspace = msm_gpu_create_address_space(gpu, pdev,
> - config->va_start, config->va_end);
> + config->va_start, config->va_end, config->mmu_features);
>
> if (gpu->aspace == NULL)
> dev_info(drm->dev, "%s: no IOMMU, fallback to VRAM carveout!\n", name);
> diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
> index 96058d2..dff9973 100644
> --- a/drivers/gpu/drm/msm/msm_gpu.h
> +++ b/drivers/gpu/drm/msm/msm_gpu.h
> @@ -34,6 +34,7 @@ struct msm_gpu_config {
> uint64_t va_start;
> uint64_t va_end;
> unsigned int nr_rings;
> + unsigned long mmu_features;
> };
>
> /* So far, with hardware that I've seen to date, we can have:
> diff --git a/drivers/gpu/drm/msm/msm_mmu.h b/drivers/gpu/drm/msm/msm_mmu.h
> index aa2c5d4..85df78d 100644
> --- a/drivers/gpu/drm/msm/msm_mmu.h
> +++ b/drivers/gpu/drm/msm/msm_mmu.h
> @@ -35,6 +35,7 @@ struct msm_mmu {
> struct device *dev;
> int (*handler)(void *arg, unsigned long iova, int flags);
> void *arg;
> + unsigned long features;
> };
>
> static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
> @@ -54,4 +55,16 @@ static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
> mmu->handler = handler;
> }
>
> +static inline void msm_mmu_set_feature(struct msm_mmu *mmu,
> + unsigned long feature)
> +{
> + mmu->features |= feature;
> +}
> +
> +static inline bool msm_mmu_has_feature(struct msm_mmu *mmu,
> + unsigned long feature)
> +{
> + return (mmu->features & feature) ? true : false;
> +}
> +
> #endif /* __MSM_MMU_H__ */
> --
> 1.9.1
>
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> Freedreno@xxxxxxxxxxxxxxxxxxxxx
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